MakefileBasedBuild/Atmel/sam3x/sam3x-ek/libraries/usb_device/class/msc/device/example/main.c

/**
 * \file
 *
 * \brief Main functions for MSC example
 *
 * Copyright (C) 2009 Atmel Corporation. All rights reserved.
 *
 * \page License
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 * 1. Redistributions of source code must retain the above copyright notice,
 * this list of conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form must reproduce the above copyright notice,
 * this list of conditions and the following disclaimer in the documentation
 * and/or other materials provided with the distribution.
 *
 * 3. The name of Atmel may not be used to endorse or promote products derived
 * from this software without specific prior written permission.
 *
 * 4. This software may only be redistributed and used in connection with an
 * Atmel AVR product.
 *
 * THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR IMPLIED
 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE
 * EXPRESSLY AND SPECIFICALLY DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR
 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
 * DAMAGE.
 */

#include "compiler.h"
#include "preprocessor.h"
#include "board.h"
#include "gpio.h"
#include "sysclk.h"
#include "sleepmgr.h"
#include "conf_usb.h"
#include "udd.h"
#include "udc.h"
#include "udi_msc.h"
#include "ui.h"
#include "conf_access.h"
#include "at45dbx.h"

static bool main_b_msc_enable = false;


#if UC3A3
//! \brief Init HMatrix
static void init_hmatrix(void);
#endif
#if ((defined SD_MMC_MCI_0_MEM) && (SD_MMC_MCI_0_MEM == ENABLE)) \
	|| ((defined SD_MMC_MCI_1_MEM) && (SD_MMC_MCI_1_MEM == ENABLE))
//! \brief Initializes SD/MMC resources: GPIO, MCI and SD/MMC.
static void sd_mmc_mci_resources_init(void);
#endif

/*! \brief Main function. Execution starts here.
 */
int main(void)
{
	irq_initialize_vectors();
	cpu_irq_enable();

	// Initialize the sleep manager
	sleepmgr_init();

	sysclk_init();
	board_init();
	ui_init();
	ui_powerdown();

#if UC3A3
	// Init Hmatrix bus   
	sysclk_enable_pbb_module(SYSCLK_HMATRIX);
	init_hmatrix();
#endif
#if (defined AT45DBX_MEM) && (AT45DBX_MEM == ENABLE)
	at45dbx_init();
#endif
#if ((defined SD_MMC_MCI_0_MEM) && (SD_MMC_MCI_0_MEM == ENABLE)) \
	|| ((defined SD_MMC_MCI_1_MEM) && (SD_MMC_MCI_1_MEM == ENABLE))
	// Initialize SD/MMC with MCI PB clock.
	sysclk_enable_pbb_module(SYSCLK_MCI);
	sysclk_enable_hsb_module(SYSCLK_DMACA);
	sd_mmc_mci_resources_init();
#endif

	// Start USB stack to authorize VBus monitoring
	udc_start();

	if (!udc_include_vbus_monitoring()) {
		// VBUS monitoring is not available on this product
		// thereby VBUS has to be considered as present
		main_vbus_action(true);
	}

	// The main loop manages only the power mode
	// because the USB management is done by interrupt
	while (true) {

		sleepmgr_enter_sleep();
      if (main_b_msc_enable) {
		 udi_msc_process_trans();
      }
	}
}

void main_vbus_action(bool b_high)
{
	if (b_high) {
		// Attach USB Device
		udc_attach();
	} else {
		// VBUS not present
		udc_detach();
	}
}

void main_suspend_action(void)
{
	ui_powerdown();
}

void main_resume_action(void)
{
	ui_wakeup();
}

void main_sof_action(void)
{
	if (!main_b_msc_enable)
		return;
	ui_process(udd_get_frame_number());
}

bool main_msc_enable(void)
{
	main_b_msc_enable = true;
	return true;
}

void main_msc_disable(void)
{
	main_b_msc_enable = false;
}


#if UC3A3
/*! \name Hmatrix bus configuration
 */
static void init_hmatrix(void)
{
	union {
		unsigned long scfg;
		avr32_hmatrix_scfg_t SCFG;
	} u_avr32_hmatrix_scfg;

	// For the internal-flash HMATRIX slave, use last master as default.
	u_avr32_hmatrix_scfg.scfg =
			AVR32_HMATRIX.scfg[AVR32_HMATRIX_SLAVE_FLASH];
	u_avr32_hmatrix_scfg.SCFG.defmstr_type =
			AVR32_HMATRIX_DEFMSTR_TYPE_LAST_DEFAULT;
	AVR32_HMATRIX.scfg[AVR32_HMATRIX_SLAVE_FLASH] =
			u_avr32_hmatrix_scfg.scfg;
}
#endif


#if ((defined SD_MMC_MCI_0_MEM) && (SD_MMC_MCI_0_MEM == ENABLE)) \
	|| ((defined SD_MMC_MCI_1_MEM) && (SD_MMC_MCI_1_MEM == ENABLE))
#include "conf_sd_mmc_mci.h"
#include "mci.h"

/*! \brief Initializes SD/MMC resources: GPIO, MCI and SD/MMC.
 */
static void sd_mmc_mci_resources_init(void)
{
	static const gpio_map_t SD_MMC_MCI_GPIO_MAP = {
		{SD_SLOT_8BITS_CLK_PIN, SD_SLOT_8BITS_CLK_FUNCTION},	// SD CLK.
		{SD_SLOT_8BITS_CMD_PIN, SD_SLOT_8BITS_CMD_FUNCTION},	// SD CMD.
		{SD_SLOT_8BITS_DATA0_PIN, SD_SLOT_8BITS_DATA0_FUNCTION},	// SD DAT[0].
		{SD_SLOT_8BITS_DATA1_PIN, SD_SLOT_8BITS_DATA1_FUNCTION},	// DATA Pin.
		{SD_SLOT_8BITS_DATA2_PIN, SD_SLOT_8BITS_DATA2_FUNCTION},	// DATA Pin.
		{SD_SLOT_8BITS_DATA3_PIN, SD_SLOT_8BITS_DATA3_FUNCTION},	// DATA Pin.
		{SD_SLOT_8BITS_DATA4_PIN, SD_SLOT_8BITS_DATA4_FUNCTION},	// DATA Pin.
		{SD_SLOT_8BITS_DATA5_PIN, SD_SLOT_8BITS_DATA5_FUNCTION},	// DATA Pin.
		{SD_SLOT_8BITS_DATA6_PIN, SD_SLOT_8BITS_DATA6_FUNCTION},	// DATA Pin.
		{SD_SLOT_8BITS_DATA7_PIN, SD_SLOT_8BITS_DATA7_FUNCTION}	// DATA Pin.
	};

	// Assign I/Os to MCI.
	gpio_enable_module(SD_MMC_MCI_GPIO_MAP,
			sizeof(SD_MMC_MCI_GPIO_MAP) /
			sizeof(SD_MMC_MCI_GPIO_MAP[0]));

	// Enable pull-up for Card Detect.
	gpio_enable_pin_pull_up(SD_SLOT_8BITS_CARD_DETECT);

	// Enable pull-up for Write Protect.
	gpio_enable_pin_pull_up(SD_SLOT_8BITS_WRITE_PROTECT);

	sd_mmc_mci_init(SD_SLOT_8BITS, sysclk_get_pbb_hz(), sysclk_get_cpu_hz());
}
#endif // SD_MMC_MCI_0_MEM == ENABLE || SD_MMC_MCI_1_MEM == ENABLE

/**
 * \mainpage ASF USB Device MSC
 *
 * \section intro Introduction
 * This example shows how to implement a USB Device Mass Storage 
 * on AVR products with USB module.
 *
 * \section startup Startup
 * The example uses all memories available on the board and connects these to
 * USB Device Mass Storage stack. After loading firmware, connect hardware board
 * (EVKxx,XPlain,...) to the USB Host. When connected to a USB host system 
 * this application allows to display all available memories as a 
 * removable disks in the Unix/Mac/Windows operating systems.
 * \note
 * This example uses the native MSC driver on Unix/Mac/Windows OS, except for Win98.
 *
 * \copydoc UI 
 *
 * \section example About example
 *
 * The example uses the following module groups:
 * - Basic modules:
 *   Startup, board, clock, interrupt, power management
 * - USB Device stack and MSC modules:
 *   <br>services/usb/
 *   <br>services/usb/udc/
 *   <br>services/usb/class/msc/
 * - Specific implementation:
 *    - main.c,
 *      <br>initializes clock
 *      <br>initializes interrupt
 *      <br>\subpage power_management
 *      <br>manages UI
 *    - specific implementation for each target "./examples/product_board/":
 *       - conf_foo.h   configuration of each module
 *       - ui.c        implement of user's interface (leds)
 *
 * <SUP>1</SUP> The memory data transfers are done outside USB interrupt routine. 
 * This is done in the MSC process ("udi_msc_process_trans()") called by main loop.
 */